I Have a 1990 Regal 33' 18,000lb Oshkosh Chassis Carburetor Gas 460 ci motor. I am looking for an ome oil cooler or a good after market Replacement.

Hi Sportster, and welcome. Geez, another Washington Barth. Lots of them up there, huh?

Is yours a pusher or puller?

If it is a puller, a B&M 70266 is good. If it is a pusher, the 70274 with a fan would be better.